weight = float(input("请输入您的体重（单位：kg）:"))
height = float(input("请输入您的身高（单位：m）:"))
BMI = weight / height ** 2
if BMI < 18.5:
    print("太瘦了，吃多点更健康！")
elif BMI <= 23.9:
    print("您的身材很完美！")
elif 24 <= BMI <= 27:
    print("过重啦！")
elif 28 <= BMI <= 32:
    print("肥胖！")
else:
    print("非常肥胖！")
